ASTROSAT CZTI

Data Quality Report

Orbit 34688

Creation date: 2022-02-26T22:33:52.557461
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_093T11_9000004964_34688cztM0_level2.evt modeM0/AS1A07_093T11_9000004964_34688cztM0_level2_quad_clean.evt
Size (bytes)211,043,52038,652,480
Size201.3 MB 36.9 MB
Events in quadrant A1,030,628267,127
Events in quadrant B1,259,941266,626
Events in quadrant C1,124,968257,959
Events in quadrant D2,828,398223,065

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044611
B051341
C045781
D099061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A214790.419190%
B2147653.027480%
C2147150.698649%
D214743620.307406%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 2147 2147 4 4 0.19% 0.19%
B 2147 2147 45 45 2.10% 2.10%
C 2147 2147 9 9 0.42% 0.42%
D 2147 2147 378 378 17.61% 17.61%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 9 143 31143 603.63 247 242 51.2
A 10 83 24361 471.15 247 242 51.2
A 14 174 4519 83.55 247 242 51.2
B 4 171 173993 3680.13 241 235 47.2
B 5 255 68347 1442.59 241 235 47.2
B 5 172 55720 1175.15 241 235 47.2
C 15 214 94254 1626.23 239 239 57.8
C 15 208 40505 696.5 239 239 57.8
C 0 10 31422 539.39 239 239 57.8
D 8 195 908149 15824.88 222 217 57.4
D 2 250 475075 8276.58 222 217 57.4
D 7 38 289156 5036.09 222 217 57.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter